"That was a really, really good win for us," Gonzaga coach Mark Few said. "We played really good. Got back to playing our style.

"We attacked on the offense end all night, and did another great job playing defense."

The Zags will play Davidson, which beat West Virginia 63-60, in Sunday night's championship game. On Nov. 12, Gonzaga routed West Virginia 84-50 in Spokane.

Romero Osby led Oklahoma (3-1) with 13 points.

"Gonzaga did a terrific job in dictating pretty much in every way," Sooners coach Lon Kruger said. "Anytime you get whipped that badly on the boards, you know they were a lot more physical, a lot more aggressive to loose balls.

"It's a terrific learning opportunity for us, and we've got to get that from it. Otherwise, it's a waste of time. So we've got to learn from it."

Consecutive long-range jumpers by Bell and Harris, who also had slammed in a rebound, gave Gonzaga a 43-25 lead three minutes into the second half.

Bell is a graduate of Kentridge High School in Kent.

Harris, a senior forward from Germany, scored 14 points in the second half.

"I think it was just the game coming to me at that point," Harris said. "I played more aggressive. That was really the main key."

Olynyk had an in-close basket and David Stockton scored on a layup as the Zags built a 59-34 lead midway through the second half.

Gonzaga got points from nine players — led by Bell with five — en route to a 32-22 halftime lead.

"That's one of the strengths of our team this year, is depth," Pangos said. "That's a big thing with our team because we just wear down other teams."